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I want to like these however, about one out of ever four leaks up where the seal is. I have to test them in the sink every time before storing them to make sure they are actually sealed. This results in me losing milk if they have a hole in them. Otherwise I am putting the milk away without being air tight sealed. The holes aren’t large enough to physically see. Otherwise they are fine, majority are simply defective.
Initially I wanted to use the attachment to pump with my medela pump into Lansinoh bags. I started running into leaking issues. When you put the adapter on the bottom of the pump it holds the bag in place really well. Unfortunately to keep the bag on, the circumference needs to be larger. Even though I am extra careful putting the bags on, the bags spring a leak on the sides where the "double seal" starts making these useless. It's such a waste because I have to go back, pour the milk into a different bag, and re-label everything. I'll just go back to using the dang bottles and dumping the milk into the bags for freezer storage. These bags are very handy for freezer storage and help heat the milk up quickly in a warmer.
The adaptors are NOT compatible with spectra pumps. I bought this thinking they would be since the description says it works with most pumps. I even read reviews and didn’t see anything about spectra. Do not buy this kit if you use a Spectra.
These bags crack and break so easy it makes me mad! I lost over 5 ounces of colostrum because of these bags not being reliable and I hate to think of something so valuable being wasted! Would not recommend.
Bags leaked upon thawing! I have purchased about 300 lansinoh bags from both target and amazon. All was well until they started leaking! Not sure if it was a bad batch but anyone nursing and pumping knows how heart breaking it is to lose that hard earned breast milk. They always leaked from the bottom corners and I was never able to tell until it was thawed out. I have since moved on to dr. Brown's bags and they have held up so far.
I ordered these bags because I ran out of the package I bought from Walmart . Some of the bags leak (like every other one) I didn’t notice until I put it in the freezer and noticed frozen milk in the bottom of my freezer, after thawing I measured the amount again and I had lost a whole oz 😪. I will NOT be purchasing again.